Δήλο is a small island in the Aegean Sea, part of the Cyclades archipelago in Greece. It is known for its rich history and archaeological significance, being a major religious center in ancient times. The island was dedicated to the god Apollo and the goddess Artemis, attracting pilgrims and visitors. Today, Δήλο is a UNESCO World Heritage Site, famous for its well-preserved ruins, including temples, theaters, and mosaics. The island is uninhabited, allowing visitors to explore its ancient sites without modern distractions. It remains a popular destination for those interested in ancient Greek history and culture.